<!doctype html>
<html>
<head>
<meta charset="UTF-8" />
<title>宽高尺寸不同的格子堆砌</title>
<style>
body{background:#F6F7F8;}
.myWidget{position:relative;overflow:hidden;zoom:1;margin:0 auto;}
.MBox{float:left;}
.widgetBox{position:relative;overflow:hidden;zoom:1;width:186px;height:166px;margin:6px;border:1px solid #E1E1E3;
border-radius:10px;
-moz-border-radius:10px;
-webkit-border-radius:10px;
box-shadow:2px 3px 5px #d3d3d3;
-moz-box-shadow:2px 3px 5px #d3d3d3;
-webkit-box-shadow:2px 3px 5px #d3d3d3;
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#fefefe, endColorstr=#e0e0e2);
background: linear-gradient(top, #fefefe, #f6f6f6 ,#f3f3f3,#f2f2f2,#e0e0e2);
background: -moz-linear-gradient(top, #fefefe, #f6f6f6 ,#f3f3f3,#f2f2f2,#e0e0e2);
background: -webkit-gradient(linear, 0 0, 0 100% , from(#fefefe),to(#e0e0e2));
background: -webkit-linear-gradient(0 0, #fefefe, #f6f6f6 ,#f3f3f3,#f2f2f2,#e0e0e2);
}
</style>
<script>
var $id = function(o){ return document.getElementById(o) || o ;};
var getElementsByClassName = function(className,parent,tag) {
parent = parent || document;
if(parent.getElementsByClassName){
return parent.getElementsByClassName(className)
}else{
tag = tag || '*';
var returnElements = []
var els = parent.getElementsByTagName(tag);
className = className.replace(/\-/g, "\\-");
var pattern = new RegExp("(^|\\s)"+className+"(\\s|$)");
var i = 0;
while(i < els.length){
if (pattern.test(els[i].className) ) {
returnElements.push(els[i]);
}
i++;
}
return returnElements;
}
};
/* 格子排序 */
var box={};
box.gen={w:200,h:180};
box.init=function(el){
box.size=[]; //格子,[1,2]表示1X2的大格子
box.obj={};
box.oArray=[];
box.maxY=-1;
box.mbox = getElementsByClassName("MBox",el,'div');
box.row = document.documentElement.offsetWidth / box.gen.w >> 0; //每行标准格数
el.style.width = box.row * box.gen.w + "px";
var i = 0 , nx, ny;
while( i < this.mbox.length){
if( getElementsByClassName("bigBox",this.mbox[i],'div').length > 0 ){
nx=Math.ceil(this.mbox[i].offsetWidth / this.gen.w);
nx=(nx > this.row) ? this.row : nx; //大小超出限制
ny=Math.ceil(this.mbox[i].offsetHeight / this.gen.h);
this.size.push([nx,ny]);
}else{
this.size.push(1);
}
i++;
}
box.sort(el);
};
box.setIfr=function(el){ //大格子初始化
var ifr = getElementsByClassName("bigBox",el,'div');;
if(ifr.length==0) return false;
var i = 0, nx, ny, theifr;
while(i < ifr.length){
theifr = getElementsByClassName("innerBox",ifr[i],'div');
nx=Math.ceil(theifr[0].offsetWidth / this.gen.w); //bigBox横向占的块数
ny=Math.ceil(theifr[0].offsetHeight / this.gen.h);
ifr[i].style.width = nx*this.gen.w-14 + 'px' ;
ifr[i].style.height = ny*this.gen.h-14 + 'px' ;
i++;
}
};
box.sort=function(el){
var y=0, x=0, temp={x:Infinity, y:Infinity}, flag=Infinity, name;
for(var n=0; n < this.size.length ; n++){
if(flag == 0){
x=temp.x;
y=temp.y;
}
flag=flag-1;
if(x>box.row-1){ //换行
x=0;
y++;
}
name=x+'_'+y; //对象属性名（反映占领的格子）
if(this.hasN(name)) { //判断属性名是否存在
n--;
x++;
if(flag<Infinity) flag=flag+1;
continue;
}
if(!this.size[n].length){ //普通格子
this.obj[name]=[x,y]; //项值（反映坐标值）
x++;
}
else{ //大格子
if(this.over(x,y,n)) {
if(temp.y > y){
temp.y = y;
temp.x = x;
}
if(temp.y < Infinity){
flag=1;
}
n--;
x++;
continue;
}
this.obj[name]=[x,y];
this.apply(x,y,n);
x+=this.size[n][0];
}
if(flag==-1) {
flag = Infinity;
temp.y = Infinity;
temp.x = Infinity;
}
var h=this.size[n][1]-1 || 0;
box.maxY=(box.maxY > y+h)? box.maxY : y+h;
}
for(var i in this.obj){
if(this.obj[i]===0 || !this.obj.hasOwnProperty(i)) continue;
this.oArray.push(this.obj[i]);
}
box.put(el);
};
box.hasN=function(n){
return n in this.obj;
};
box.over=function(x,y,n){ //判断是否会重叠
var name;
if(x+this.size[n][0] > this.row) return true; //超出显示范围
for(var k=1; k<this.size[n][1];k++){
name=x+'_'+(y-0+k);
if(this.hasN(name)) {return true;} //左侧一列有无重叠
}
for(k=1; k<this.size[n][0];k++){
name=(x-0+k)+'_'+y;
if(this.hasN(name)) {return true;} //上侧一行有无重叠
}
return false;
};
box.apply=function(x,y,n){ //大格子中多占的位置
var posX=x, //大格子左上角位置
posY=y;
for(var t=0; t<this.size[n][0]; t++) {
for(var k=0; k<this.size[n][1]; k++){
name=(posX+t)+'_'+(posY+k);
if(t==0 && k==0) { continue; }
this.obj[name]=0; //多占的格子无坐标值
}
}
};
box.put=function(el){
var x,y;
for(var i =0;i< this.oArray.length; i++){
x=box.gen.w*this.oArray[i][0];
y=box.gen.h*this.oArray[i][1];
box.mbox[i].style.cssText = "position:absolute;left:"+ x +"px;top:" + y + "px;";
}
el.style.height= box.gen.h*(box.maxY+1) +'px';
};
</script>
</head>
<body>
<div id="myWidget" class="myWidget"></div>
<script>
var myWidget = $id("myWidget");
//创建随机内容
var content = '';
for(i = 0; i < 30; i++) {
if(!(Math.random()*3 >> 0)){
height = Math.floor(Math.random()*200 + 100);
width = Math.floor(Math.random()*200 + 100);
content += '<div class="MBox"><div class="widgetBox bigBox"><div style="width:' + width +'px;height:' + height +'px;margin:0 auto;" class="innerBox"></div></div></div>';
}else{
content += '<div class="MBox"><div class="widgetBox"></div></div>';
}
};
myWidget.innerHTML = content;
window.onload = function(){
box.setIfr(myWidget);
box.init(myWidget);
};
window.onresize = function(){
box.init(myWidget);
};
</script>
</body>
</html>
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